Problem with my code

So basically im 14 and just startd c++, i bought a book and am self learning, im doing quite well but i am having trouble with my newest code. Please fix it, and tell me what i can do next time to fix it myself. Thank you.

It would also help if you explained what the outcome is meant to be. Is this meant to be a program about archery or something because I have absolutely no idea. It would also be helpful to wrap your code in the code tags, like: